Gabriella "Gaby" Santinelli was born in New York City, and grew up in New York, New Jersey, New England and Ohio. Her father was Italian-American character actor, Ralph P Martin (Santinelli). Gaby won scholarships to study acting at Interlochen Arts Academy and Northwestern University. She then earned her Master of Music Degree in Voice Performance from Mannes School Of Music (NYC). Additional professional acting training includes the Practical Aesthetics Workshop and an Acting Apprenticeship with W.H. Macy, David Mamet and The Atlantic Theater Company in Vermont, and advanced Meisner Technique in London and at Meisner's holiday home in the Caribbean. Gaby joined Screen Actors Guild acting alongside Jessica Lange and Halle Berry in Stephen Gyllenhaal's "Losing Isaiah" for Paramount. For fifteen years, Gaby enjoyed a stage, screen and studio career in London, England, where she won an Olivier Award (=the British Tony Award) for Best Supporting Performance in a Musical in the world premiere company of "Jerry Springer - The Opera" (National Theatre & West End). She also acted alongside Colin Firth in director Michael Winterbottom's feature film "A Summer in Genoa". In addition to her numerous West End credits, she traveled the British Isles, Europe, and the world in touring productions. While living in the UK, Gaby became a dual US-UK Citizen, and maintains valid US & UK Passports. In 2013, Gaby relocated to Los Angeles, where she continues to act, sing, write, and coach. In addition to her private coaching studio, she has taught acting & accents at the SAG-AFTRA Conservatory, and privately in Tokyo, Japan. In 2017, Gaby joined the acting faculty at USC's School of Dramatic Arts, where she has taught Acting in English, VoiceOver Acting and Performance For Camera. Gaby coached Danielle Macdonald and Ashley Thomas on the Oscar-winning Live Action Short, "Skin" (2019). She also coached Ms Macdonald on "Skin" the feature and American Horror Story.